Plainfield Township, MI

Township in Iosco County, MI, US

By Neilsberg Research

Last updated May 1, 2026

Key Indicators

A quick look at key numbers

Population

3,353

Source: U.S. Census Bureau American Community Survey (ACS) 2020-2024 5-Year Estimates

Median Age

59.9

years ∙ half population younger than 59.9, half older

Diversity Index

17.8%

chance two random people differ in race and ethnicity

Nativity

0.3%

foreign-born population

99.7%Native

0.3% Foreign-born

Geographic Context

Location, size, and surroundings

About

Plainfield Township is a township in Iosco County, Michigan, United States.

Location

Township in Iosco County, MI, US

Co-ordinates

DEC44.422382° N, 83.774745° W

DMS44° 25′ 20.58″ N, 83° 46′ 29.08″ W

Population Density & area

32.33/sq mi (12.48/km²)

Total Area

107.5 sq mi (278.5 km²)

Land Area

103.7 sq mi (268.7 km²) · 96.5%

Water Area

3.8 sq mi (9.8 km²) · 3.5%

Demographics & Living

Who lives here, how households are formed, and community composition

Population Composition

Key characteristics of the population

Sex Distribution

54% male

Male 54%

Female 46%

males per 100 females

Plainfield Township 117.4

Iosco County 99.9

Michigan 98.2

Nativity

0.3%

foreign-born population

99.7%Native

0.3% Foreign-born

% Foreign-born

Plainfield Township 0.3%

Iosco County 2%

Michigan 7.2%

Age Distribution

How the population is spread across age groups

Median Age

59.9

years ∙ half population younger than 59.9, half older

Plainfield Township

59.9

Iosco County

53.5

Michigan

40.2

Dependency ratio

113.3

dependents per 100 working-age adults

Plainfield Township 113.3

Iosco County 92.5

Michigan 66.3

AGE DISTRIBUTION

Distribution of age group

Median age

	Plainfield Township	Iosco County	Michigan
Age Group
Children (Under 18)	14.5%	17%	21.2%
Working age (18-64)	46.9%	51.9%	60.2%
Senior (65+)	38.6%	31.1%	18.6%
Dependency ratio
Total dependency ratio	113.3	92.5	66.3
Child dependency ratio	31	32.7	35.3
Old-age dependency ratio	82.3	59.8	31

Racial & Ethnic Composition

Racial and ethnic makeup and how it compares

Race & Ethnicity

White

90.5%

Black

1.6%

Asian

Hispanic

5.1%

Other

2.8%

Note: White, Black, and Asian refer to individuals belonging to a single race and not of Hispanic origin. Hispanics may be of any race.

Diversity Index

17.8%

chance two random people differ in race and ethnicity

Plainfield Township 17.8%

Iosco County 16.4%

Michigan 45.2%

Note: The Diversity Index (DI), based on the Blau Index, measures the probability that two randomly selected individuals differ in race and ethnicity. Values range from 0 (no diversity) to 1 (high diversity) and are shown as percentages.

RACIAL & ETHNIC COMPOSITION

Race & Ethnicity

Percentage of Plainfield Township population

	Plainfield Township	Iosco County	Michigan
Hispanic or Latino	5.1%	2.8%	5.9%
Mexican	4.6%	2.2%	4%
Puerto Rican	0%	0.2%	0.5%
Cuban	0%	0%	0.2%
Other Hispanic / Latino	0.6%	0.3%	1.2%
Not Hispanic or Latino	94.9%	97.2%	94.1%
One race	92.6%	93.5%	89.6%
White	90.5%	91.3%	72.4%
Black or African American	1.6%	0.9%	13.1%
American Indian and Alaska Native	0.5%	0.1%	0.3%
Asian	0%	0.8%	3.4%
Native Hawaiian and Other Pacific Islander	0%	0%	0%
Some Other Race	0%	0.4%	0.5%
Two or more races (Multiracial)	2.3%	3.7%	4.5%

Household & Families Composition

Household size, type, and family structure

Household structure

59.2% family

Family 59.2%

Non family 40.8%

% family households

Plainfield Township 59.2%

Iosco County 56.3%

Michigan 62.4%

Average household size

2.04

persons per household

Plainfield Township

2.04

Iosco County

2.14

Michigan

2.42

Household & Family COMPOSITION

Households

Percentage of Plainfield Township population

	Plainfield Township	Iosco County	Michigan
Total households	1,634	11,713	4,076,369
Average houshold size	2.04	2.14	2.42
Family households	968	6,592	2,545,621
Average family size	2.65	2.8	3.05
Married couple family	892	5,197	1,878,767
Other families	76	1,395	666,854
Male householder	45	503	199,150
Female householder	31	892	467,704
Non-family households	666	5,121	1,530,748
One-person households	600	4,514	1,250,418
Male householder	276	2,111	583,425
Senior (65+) living alone	156	1,015	188,594
Female householder	324	2,403	666,993
Senior (65+) living alone	210	1,475	349,637
Other living arrangements	66	607	280,330

Housing Profile

Housing stock, ownership, rentals, and cost burdens

Total housing units

3,920

housing units

Plainfield Township 3,920

Iosco County 20,061

Michigan 4,622,236

Occupancy status

41.7% occupied

Occupied 41.7%

Vacant 58.3%

vacancy rate

Plainfield Township 58.3%

Iosco County 41.6%

Michigan 11.8%

Housing Characteristics

How the housing supply is structured and used

Types of Housing unit

88.9%

Single family houses

88.9%

Apartments in multi-unit structures

1.1%

Mobile homes

10%

Boat, RV, van, etc

Median Year Built

1972

Half of houses were built before 1972, and half after.

Historic ∙ 1939 or earlier

3.4%

Postwar & mid-century ∙ 1940 - 1969

41.8%

Late 20th century ∙ 1970 - 1999

43.1%

Modern ∙ 2000 or later

11.8%

Note: Median year built reflects occupied units only; distribution includes all units.

Housing Characteristics

Units, rooms & bedrooms

Physical characteristics of housing units

	Plainfield Township	Iosco County	Michigan
Rooms per unit
Median rooms	5.5	5.4	5.9
1–3 rooms	8.8%	11.8%	10.5%
4–6 rooms	61.6%	60.5%	51.9%
7+ rooms	29.4%	27.7%	37.6%
Bedrooms
No bedroom / studio	0.9%	1.4%	1.6%
1 bedroom	2.7%	6.8%	8.9%
2 bedrooms	39.6%	34.4%	24.6%
3 bedrooms	44.9%	46.2%	43.5%
4+ bedrooms	11.8%	11.1%	21.4%
At a glance
Median year built	1972	1973	1972
Total housing units	3,920	20,061	4,622,236

Occupancy Profile

Who is inside and how they use it

Homeownership

87.9% owners

Renter-occupied 12.1%

Owner-occupied 87.9%

homeownership rate

Plainfield Township 87.9%

Iosco County 82.1%

Michigan 73.2%

Average household size

2.08

Owner-occupied

1.76

Renter-occupied

owner-occupied average size

Plainfield Township 2.08

Iosco County 2.19

Michigan 2.54

Housing Characteristics

Occupied unit characteristics

Tenure, crowding, and utilities

	Plainfield Township	Iosco County	Michigan
Total occupied units	1,634	11,713	4,076,369
Year moved in
2020 or later	14.5%	19.5%	21%
2010 to 2019	42.5%	39.8%	39.5%
2000 to 2009	19.5%	15.9%	16%
1999 or earlier	23.6%	24.8%	23.4%
Occupants per room
1.00 or fewer	99.9%	99.2%	98.4%
1.01 to 1.50	0.1%	0.5%	1.2%
1.51 or more	0%	0.3%	0.4%
Vehicles availability
No vehicles	10.8%	7.2%	7%
1 vehicle	31.9%	40.2%	34.8%
2 vehicles	40.6%	37.1%	38.3%
3 or more vehicles	16.7%	15.6%	19.8%
House heating fuel used
Gas	74%	82.5%	83.6%
Electricity	7.2%	7.9%	12.1%
Solar	0%	0.1%	0%
Fuel oil, kerosene etc	1%	0.5%	0.8%
All other fuels	17.1%	8.8%	3%
No fuel used	0.8%	0.1%	0.5%
Selected characteristics
Lacking complete plumbing	0%	0.2%	0.4%
Lacking complete kitchen	0.4%	0.7%	0.7%
No telephone service available	0.7%	1.7%	0.7%

Housing Value

What owner-occupied units are worth

Median home value

$174,300

owner-occupied units

Median value(USD)

Plainfield Township

$174,300

Iosco County

$142,200

Michigan

$231,600

Housing Cost Burden

23.4%

of homeowners with a mortgage are cost-burdened

% Cost-Burdened Households

Owners with a mortgage

23.4%

Owners without a mortgage

18.6%

Renters

62.3%

Note: Households spending 30% or more of their income on housing costs are considered cost-burdened.

Financial characteristics

Property value and housing costs

Tenure, crowding, and utilities

	Plainfield Township	Iosco County	Michigan
Property value
Median Value	$174,300	$142,200	$231,600
Under $100,000	27.2%	29.7%	16.8%
$100,000 - $200,000	32.8%	39.3%	24.7%
$200,000 - $300,000	18.2%	16.1%	23.4%
$300,000 - $500,000	19.1%	10.2%	24.1%
$500,000 - $1,000,000	2.2%	4%	9.2%
$1,000,000 and more	0.5%	0.7%	1.6%
Owner-occupied households
With a mortgage	38.8%	45%	57.8%
Without a mortgage	61.2%	55%	42.2%
Median monthly owner costs
With a mortgage	$1,262	$1,036	$1,569
Without a mortgage	$483	$423	$602
Gross rent
Median rent	$830	$719	$1,129

Education Profile

How educated is the community and how education pays off

Adults with a college degree

18.4%

of adults 25+ with a bachelor's degree or higher

Plainfield Township 18.4%

Iosco County 19.3%

Michigan 32.4%

Adults without a high school diploma

15%

of adults (25+) without a high school diploma

Plainfield Township 15%

Iosco County 9.7%

Michigan 8%

School Enrollment

Who is enrolled in school and at what level

School enrollment

352

population (age 3+) enrolled in school

Nursery / Preschool

K–12

94.6%

College / Undergraduate

5.4%

Graduate / Professional

College-going rate (18-24 yr olds)

2.8%

of 18-24-year-olds in college or graduate school

Plainfield Township

2.8%

Iosco County

18.5%

Michigan

41.1%

Enrollment & school type

Enrollment levels, college-going rate, and public vs private school split

Population 3+ currently enrolled in a school

	Plainfield Township	Iosco County	Michigan
Total enrolled (age 3+)	352	4,025	2,312,914
Nursery / preschool	0%	8.1%	5.6%
K–12	94.6%	76.6%	67.9%
Kindergarten	3.1%	4.4%	5.2%
Elementary: Grades 1–4	12.5%	21.4%	19.7%
Elementary: Grades 5–8	44.3%	26.1%	20.8%
High School: Grades 9–12	34.7%	24.7%	22.2%
College or graduate school	5.4%	15.3%	26.5%
College, undergraduate	5.4%	12.7%	21.1%
Graduate, professional school	0%	2.6%	5.4%
College-going rate · 18-24 yr olds	2.8%	18.5%	41.1%
School type
Public school	90.3%	90.1%	85.2%
Private school	9.7%	9.9%	14.8%

Education Attainment by Level & Gender

What is the highest level of education completed among adults

Education attainment

2,725

population 25 years and over

Total adults (25+)

Less than 9th grade

4.3%

9th-12th, no diploma

10.7%

HS graduate

34.5%

Some college no degree

19.7%

Associates degree

12.4%

Bachelors degree

12.1%

Graduate or professional degree

6.3%

Attainment by gender

Male vs Female

Adults (25+) · Share within each education level

% male · % female

Less than 9th grade

55.2% · 44.8%

9th-12th, no diploma

48.5% · 51.5%

HS graduate

55.8% · 44.2%

Some college no degree

46.6% · 53.4%

Associates degree

52.4% · 47.6%

Bachelors degree

44.7% · 55.3%

Graduate or professional degree

38% · 62%

Educational Attainment Overview

Distribution and key education attainment rates for adults (25+)

Highest credential completed · adults 25+

	Plainfield Township	Iosco County	Michigan
Population (25+)	2,725	19,566	7,008,507
Less than 9th grade	4.3%	1.8%	2.6%
9th–12th, no diploma	10.7%	7.9%	5.4%
High school diploma or GED	34.5%	36.3%	28%
Some college, no degree	19.7%	24.8%	21.9%
Associate's degree	12.4%	9.8%	9.8%
Bachelor's degree or higher	18.4%	19.3%	32.4%
Bachelor's degree	12.1%	11.7%	19.7%
Graduate or professional	6.3%	7.7%	12.7%
High School or higher	85.1%	90.2%	92.1%

Earnings by education level

percentage as applicable

Median Earnings

$35,813

Median earnings for adults 25+, by level

Less than HS graduate

$—

HS graduate

$30,083

Some college or associates

$40,724

Bachelors degree

$55,000

Graduate or professional degree

$56,500

Poverty Rate

for ages 25+, with bachelors degree or higher

Less than HS graduate

44%

HS graduate

19.6%

Some college or associates

9.6%

Bachelors degree or higher

Outcomes by Education Level

Earnings and poverty rates across education levels (25+)

Adults 25+

	Plainfield Township	Iosco County	Michigan
Median earnings
Population 25+, with earnings	$35,813	$35,758	$50,316
Less than high school graduate	$—	$21,146	$31,851
High school graduate (includes equivalency)	$30,083	$31,674	$37,777
Some college or associate's degree	$40,724	$32,708	$44,844
Bachelor's degree	$55,000	$54,073	$66,893
Graduate or professional degree	$56,500	$62,330	$85,195
Poverty rates
Less than high school graduate	44%	37.9%	27.4%
High school graduate (includes equivalency)	19.6%	17.4%	15.2%
Some college or associate's degree	9.6%	15.8%	10.3%
Bachelor's degree or higher	0%	5.8%	4.2%

Insights for Plainfield Township, by topic

Income By year By race By age By gender

Population By year By race By age By gender

About Neilsberg Research

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